[PATCH v3 0/4] new macro: find_closest()

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This series proposes to unduplicate the code used to find the
member in an array closest to 'x'.

The first patch adds a macro implementing the algorithm in two
flavors - for arrays sorted in ascending and descending order.
Other three patches replace duplicated code with calls to one
of these macros in some hwmon drivers.

v3:
- don't add find_closest() to kernel.h - instead create a new include
  for helper macros
- don't remove RANGE_TO_REG() and FREQ_TO_REG(), but replace their
  contents with find_closest() expansions
- use kernel-docs to document new macros
- rename find_closest_desc() to find_closest_descending()

v2:
https://lkml.org/lkml/2015/3/10/582

v1:
https://lkml.org/lkml/2015/2/24/509

Bartosz Golaszewski (4):
  util_macros.h: add find_closest() macro
  hwmon: (ina2xx) replace ina226_avg_bits() with find_closest()
  hwmon: (lm85) use find_closest() in x_TO_REG() functions
  hwmon: (w83795) use find_closest_descending() in pwm_freq_to_reg()

 drivers/hwmon/ina2xx.c      | 17 +++--------------
 drivers/hwmon/lm85.c        | 26 ++++++++------------------
 drivers/hwmon/w83795.c      |  8 +++-----
 include/linux/util_macros.h | 39 +++++++++++++++++++++++++++++++++++++++
 4 files changed, 53 insertions(+), 37 deletions(-)
 create mode 100644 include/linux/util_macros.h

-- 
2.1.4


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